In June, 2014, they had their windows smashed in and graffiti sprayed in what seemed to be anti-gentification protests [sources: one, two]. The owners thought it was related to gentrification because the vandalism happened right after the West Oakland Specific Plan (which has been a target of anti-gentrification protests)
Their site is at http://www.kilovoltcoffee.com/ and they are open Mon. – Sun., 7AM-5PM. They are at 1829 Mandela.
Some more articles about the spot: